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- noun Plural form of
Sorry, no etymologies found.
Recall that little more than Archaeopteryx, a few enantiornithines, and Ornithurae were known at the last writing; now a six-page taxon list!
Protopteryx was outside the clade that included the 'more advanced' enantiornithines.
While it's true that enantiornithines have proved to be a diverse, speciose clade, the problem with such groups is that people soon come to assume that any and all new species are members of said groups.
And Yanornis isn't an enantiornithine - it's a member of a small clade of Cretaceous birds that are more closely related to neornithines than enantiornithines are
This is reminiscent of what's seen in various enantiornithines and other Mesozoic birds, though the posterolateral processes aren't normally as divergent as they are in
Named for a near-complete specimen, Aberratiodontus was regarded by its describers (Gong et al. 2004) as one of the most unusual of the enantiornithines or 'opposite birds' (though read on!).